¶
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<unistd.h>
#include<arpa/inet.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<pthread.h>
#define BUFF_SIZE 1024
int thread_num[25];// ( 값 + 1, 0)
//ex) thread_num[ ]== +1
int client_socket_array[25];// , 각
//ex) == client_socket_array[ ]
void* rutine(void* data)//data = &thread_num[ ]
{
int num;
int client_socket;
char buff_rcv[BUFF_SIZE+5],buff_snd[BUFF_SIZE+5];
int rcv;
int i;
num=*((int*)data);
// 기 +1 값 .
client_socket=client_socket_array[num-1];
// 간결 값 .
recv(client_socket, buff_rcv,BUFF_SIZE,0);
printf("%s\n",buff_rcv);
sprintf(buff_snd,"test\n");
send(client_socket, buff_snd, strlen(buff_snd)+1,0);
printf("%dth client connected\n",num);
//
while(1)
{
rcv=recv(client_socket,buff_rcv,BUFF_SIZE,0);
if(rcv>0)
{
printf("received\n");
sprintf(buff_snd,"%dth client : %s",num,buff_rcv);
for(i=0;i<20;i++)
if(thread_num[i])
send(client_socket_array[i],buff_snd,strlen(buff_snd)+1,0);
}
else
{
break;
}
}
printf("disconnected\n");
close(client_socket);
thread_num[num-1]=0;
client_socket_array[num-1]=0;
// thread_num 0 기.
}
int main()
{
int server_socket;
pthread_t p_thread[25];
struct sockaddr_in server_addr;
struct sockaddr_in client_addr;
int client_addr_size;
int i;
server_socket=socket(PF_INET, SOCK_STREAM, 0);
if(server_socket==-1)
{
printf("socket error\n");
exit(1);
}
memset(&server_addr,0,sizeof(server_addr));
server_addr.sin_family =AF_INET;
server_addr.sin_port =htons(4000);
server_addr.sin_addr.s_addr=htonl(INADDR_ANY);
if(-1==bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr)))
{
printf("bind error\n");
exit(1);
}
printf("server started\n");
for(i=0;i<20;i++)
thread_num[i]=0;
while(1)
{
if(-1==listen(server_socket,5))
{
printf("listen error\n");
exit(1);
}
for(i=0;i<20;i++)
{
if(!thread_num[i])
{
client_addr_size= sizeof(client_addr);
client_socket_array[i] = accept(server_socket, (struct sockaddr*)&client_addr,&client_addr_size);
thread_num[i]=i+1;
memset(&p_thread[i],0,sizeof(p_thread[i]));
pthread_create(&p_thread[i],NULL,rutine,(void *)&thread_num[i]);
break;
}
}
if(i==20)
printf("error : Too many clients connected");
}
close(server_socket);
return 0;
}
¶
#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<string.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<pthread.h>
#define BUFF_SIZE 1024
void gotoxy(int x,int y)
{
printf("\033[%d;%df",y,x);
// 경 , y값 길 길 .(그 )
fflush(stdout);
}
int client_socket;
int check;
void* rcv_thread(void *data)
{
int i;
char buff_rcv[BUFF_SIZE+5];
int rcv;
while(1)
{
rcv=recv(client_socket, buff_rcv, BUFF_SIZE, 0);
if(rcv>0)
{
while(check==1);
check=2;
for(i=0;i<rcv;)
{
gotoxy(0,100);//gotoxy .
printf("\n");
gotoxy(0,14);
printf(" ");
gotoxy(0,14);
printf("%s",&buff_rcv[i]);
i+=strlen(&buff_rcv[i])+1;
}
}
else
{
printf("disconnected\n");
break;
}
gotoxy(0,15);
printf("write message to send : ");
gotoxy(25,15);
check=0;
}
}
void* snd_thread(void *data)
{
char buff_snd[BUFF_SIZE+5];
while(1)
{
while(check==2);
check=1;
gotoxy(0,15);
printf("write message to send : ");
gotoxy(25,15);
check=0;
fgets(buff_snd,BUFF_SIZE,stdin);
check=0;
if(send(client_socket, buff_snd, strlen(buff_snd)+1,0)<=0)
{
printf("disconnected\n");
break;
}
}
}
int main()
{
struct sockaddr_in server_addr;
char buff_snd[BUFF_SIZE+5];
char buff_rcv[BUFF_SIZE+5];
int rcv;
int i;
pthread_t p_thread[2];
client_socket=socket(PF_INET, SOCK_STREAM, 0);
if(client_socket==-1)
{
printf("socket error\n");
return 1;
}
memset( &server_addr, 0, sizeof( server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons( 4000);
server_addr.sin_addr.s_addr= inet_addr( "127.0.0.1");
if(-1==connect(client_socket,(struct sockaddr*)&server_addr, sizeof( server_addr) ) )
{
printf("connect error\n");
return 1;
}
sprintf(buff_snd,"test\n");
send(client_socket, buff_snd, strlen(buff_snd)+1,0);
recv(client_socket, buff_rcv,BUFF_SIZE,0);
printf("%s\n",buff_rcv);
printf("connecting succesed\n");
memset(&p_thread[0],0,sizeof(p_thread[0]));
pthread_create(&p_thread[0],NULL,rcv_thread,(void *)NULL);
memset(&p_thread[1],0,sizeof(p_thread[1]));
pthread_create(&p_thread[1],NULL,snd_thread,(void *)NULL);
pthread_join(p_thread[0],(void**)&rcv);
pthread_join(p_thread[1],(void**)&rcv);
close(client_socket);
return 0;
}
¶
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